1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * wm8971.c -- WM8971 ALSA SoC Audio driver
4 *
5 * Copyright 2005 Lab126, Inc.
6 *
7 * Author: Kenneth Kiraly <kiraly@lab126.com>
8 *
9 * Based on wm8753.c by Liam Girdwood
10 */
11
12 #include <linux/module.h>
13 #include <linux/moduleparam.h>
14 #include <linux/init.h>
15 #include <linux/delay.h>
16 #include <linux/pm.h>
17 #include <linux/i2c.h>
18 #include <linux/regmap.h>
19 #include <linux/slab.h>
20 #include <sound/core.h>
21 #include <sound/pcm.h>
22 #include <sound/pcm_params.h>
23 #include <sound/soc.h>
24 #include <sound/initval.h>
25
26 #include "wm8971.h"
27
28 #define WM8971_REG_COUNT 43
29
30 /* codec private data */
31 struct wm8971_priv {
32 unsigned int sysclk;
33 struct delayed_work charge_work;
34 struct regmap *regmap;
35 };
36
37 /*
38 * wm8971 register cache
39 * We can't read the WM8971 register space when we
40 * are using 2 wire for device control, so we cache them instead.
41 */
42 static const struct reg_default wm8971_reg_defaults[] = {
43 { 0, 0x0097 },
44 { 1, 0x0097 },
45 { 2, 0x0079 },
46 { 3, 0x0079 },
47 { 4, 0x0000 },
48 { 5, 0x0008 },
49 { 6, 0x0000 },
50 { 7, 0x000a },
51 { 8, 0x0000 },
52 { 9, 0x0000 },
53 { 10, 0x00ff },
54 { 11, 0x00ff },
55 { 12, 0x000f },
56 { 13, 0x000f },
57 { 14, 0x0000 },
58 { 15, 0x0000 },
59 { 16, 0x0000 },
60 { 17, 0x007b },
61 { 18, 0x0000 },
62 { 19, 0x0032 },
63 { 20, 0x0000 },
64 { 21, 0x00c3 },
65 { 22, 0x00c3 },
66 { 23, 0x00c0 },
67 { 24, 0x0000 },
68 { 25, 0x0000 },
69 { 26, 0x0000 },
70 { 27, 0x0000 },
71 { 28, 0x0000 },
72 { 29, 0x0000 },
73 { 30, 0x0000 },
74 { 31, 0x0000 },
75 { 32, 0x0000 },
76 { 33, 0x0000 },
77 { 34, 0x0050 },
78 { 35, 0x0050 },
79 { 36, 0x0050 },
80 { 37, 0x0050 },
81 { 38, 0x0050 },
82 { 39, 0x0050 },
83 { 40, 0x0079 },
84 { 41, 0x0079 },
85 { 42, 0x0079 },
86 };
87
88 #define wm8971_reset(c) snd_soc_component_write(c, WM8971_RESET, 0)
89
90 /* WM8971 Controls */
91 static const char *wm8971_bass[] = { "Linear Control", "Adaptive Boost" };
92 static const char *wm8971_bass_filter[] = { "130Hz @ 48kHz",
93 "200Hz @ 48kHz" };
94 static const char *wm8971_treble[] = { "8kHz", "4kHz" };
95 static const char *wm8971_alc_func[] = { "Off", "Right", "Left", "Stereo" };
96 static const char *wm8971_ng_type[] = { "Constant PGA Gain",
97 "Mute ADC Output" };
98 static const char *wm8971_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
99 static const char *wm8971_mono_mux[] = {"Stereo", "Mono (Left)",
100 "Mono (Right)", "Digital Mono"};
101 static const char *wm8971_dac_phase[] = { "Non Inverted", "Inverted" };
102 static const char *wm8971_lline_mux[] = {"Line", "NC", "NC", "PGA",
103 "Differential"};
104 static const char *wm8971_rline_mux[] = {"Line", "Mic", "NC", "PGA",
105 "Differential"};
106 static const char *wm8971_lpga_sel[] = {"Line", "NC", "NC", "Differential"};
107 static const char *wm8971_rpga_sel[] = {"Line", "Mic", "NC", "Differential"};
108 static const char *wm8971_adcpol[] = {"Normal", "L Invert", "R Invert",
109 "L + R Invert"};
110
111 static const struct soc_enum wm8971_enum[] = {
112 SOC_ENUM_SINGLE(WM8971_BASS, 7, 2, wm8971_bass), /* 0 */
113 SOC_ENUM_SINGLE(WM8971_BASS, 6, 2, wm8971_bass_filter),
114 SOC_ENUM_SINGLE(WM8971_TREBLE, 6, 2, wm8971_treble),
115 SOC_ENUM_SINGLE(WM8971_ALC1, 7, 4, wm8971_alc_func),
116 SOC_ENUM_SINGLE(WM8971_NGATE, 1, 2, wm8971_ng_type), /* 4 */
117 SOC_ENUM_SINGLE(WM8971_ADCDAC, 1, 4, wm8971_deemp),
118 SOC_ENUM_SINGLE(WM8971_ADCTL1, 4, 4, wm8971_mono_mux),
119 SOC_ENUM_SINGLE(WM8971_ADCTL1, 1, 2, wm8971_dac_phase),
120 SOC_ENUM_SINGLE(WM8971_LOUTM1, 0, 5, wm8971_lline_mux), /* 8 */
121 SOC_ENUM_SINGLE(WM8971_ROUTM1, 0, 5, wm8971_rline_mux),
122 SOC_ENUM_SINGLE(WM8971_LADCIN, 6, 4, wm8971_lpga_sel),
123 SOC_ENUM_SINGLE(WM8971_RADCIN, 6, 4, wm8971_rpga_sel),
124 SOC_ENUM_SINGLE(WM8971_ADCDAC, 5, 4, wm8971_adcpol), /* 12 */
125 SOC_ENUM_SINGLE(WM8971_ADCIN, 6, 4, wm8971_mono_mux),
126 };
127
128 static const struct snd_kcontrol_new wm8971_snd_controls[] = {
129 SOC_DOUBLE_R("Capture Volume", WM8971_LINVOL, WM8971_RINVOL, 0, 63, 0),
130 SOC_DOUBLE_R("Capture ZC Switch", WM8971_LINVOL, WM8971_RINVOL,
131 6, 1, 0),
132 SOC_DOUBLE_R("Capture Switch", WM8971_LINVOL, WM8971_RINVOL, 7, 1, 1),
133
134 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8971_LOUT1V,
135 WM8971_ROUT1V, 7, 1, 0),
136 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8971_LOUT2V,
137 WM8971_ROUT2V, 7, 1, 0),
138 SOC_SINGLE("Mono Playback ZC Switch", WM8971_MOUTV, 7, 1, 0),
139
140 SOC_DOUBLE_R("PCM Volume", WM8971_LDAC, WM8971_RDAC, 0, 255, 0),
141
142 SOC_DOUBLE_R("Bypass Left Playback Volume", WM8971_LOUTM1,
143 WM8971_LOUTM2, 4, 7, 1),
144 SOC_DOUBLE_R("Bypass Right Playback Volume", WM8971_ROUTM1,
145 WM8971_ROUTM2, 4, 7, 1),
146 SOC_DOUBLE_R("Bypass Mono Playback Volume", WM8971_MOUTM1,
147 WM8971_MOUTM2, 4, 7, 1),
148
149 SOC_DOUBLE_R("Headphone Playback Volume", WM8971_LOUT1V,
150 WM8971_ROUT1V, 0, 127, 0),
151 SOC_DOUBLE_R("Speaker Playback Volume", WM8971_LOUT2V,
152 WM8971_ROUT2V, 0, 127, 0),
153
154 SOC_ENUM("Bass Boost", wm8971_enum[0]),
155 SOC_ENUM("Bass Filter", wm8971_enum[1]),
156 SOC_SINGLE("Bass Volume", WM8971_BASS, 0, 7, 1),
157
158 SOC_SINGLE("Treble Volume", WM8971_TREBLE, 0, 7, 0),
159 SOC_ENUM("Treble Cut-off", wm8971_enum[2]),
160
161 SOC_SINGLE("Capture Filter Switch", WM8971_ADCDAC, 0, 1, 1),
162
163 SOC_SINGLE("ALC Target Volume", WM8971_ALC1, 0, 7, 0),
164 SOC_SINGLE("ALC Max Volume", WM8971_ALC1, 4, 7, 0),
165
166 SOC_SINGLE("ALC Capture Target Volume", WM8971_ALC1, 0, 7, 0),
167 SOC_SINGLE("ALC Capture Max Volume", WM8971_ALC1, 4, 7, 0),
168 SOC_ENUM("ALC Capture Function", wm8971_enum[3]),
169 SOC_SINGLE("ALC Capture ZC Switch", WM8971_ALC2, 7, 1, 0),
170 SOC_SINGLE("ALC Capture Hold Time", WM8971_ALC2, 0, 15, 0),
171 SOC_SINGLE("ALC Capture Decay Time", WM8971_ALC3, 4, 15, 0),
172 SOC_SINGLE("ALC Capture Attack Time", WM8971_ALC3, 0, 15, 0),
173 SOC_SINGLE("ALC Capture NG Threshold", WM8971_NGATE, 3, 31, 0),
174 SOC_ENUM("ALC Capture NG Type", wm8971_enum[4]),
175 SOC_SINGLE("ALC Capture NG Switch", WM8971_NGATE, 0, 1, 0),
176
177 SOC_SINGLE("Capture 6dB Attenuate", WM8971_ADCDAC, 8, 1, 0),
178 SOC_SINGLE("Playback 6dB Attenuate", WM8971_ADCDAC, 7, 1, 0),
179
180 SOC_ENUM("Playback De-emphasis", wm8971_enum[5]),
181 SOC_ENUM("Playback Function", wm8971_enum[6]),
182 SOC_ENUM("Playback Phase", wm8971_enum[7]),
183
184 SOC_DOUBLE_R("Mic Boost", WM8971_LADCIN, WM8971_RADCIN, 4, 3, 0),
185 };
186
187 /*
188 * DAPM Controls
189 */
190
191 /* Left Mixer */
192 static const struct snd_kcontrol_new wm8971_left_mixer_controls[] = {
193 SOC_DAPM_SINGLE("Playback Switch", WM8971_LOUTM1, 8, 1, 0),
194 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_LOUTM1, 7, 1, 0),
195 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_LOUTM2, 8, 1, 0),
196 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_LOUTM2, 7, 1, 0),
197 };
198
199 /* Right Mixer */
200 static const struct snd_kcontrol_new wm8971_right_mixer_controls[] = {
201 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_ROUTM1, 8, 1, 0),
202 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_ROUTM1, 7, 1, 0),
203 SOC_DAPM_SINGLE("Playback Switch", WM8971_ROUTM2, 8, 1, 0),
204 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_ROUTM2, 7, 1, 0),
205 };
206
207 /* Mono Mixer */
208 static const struct snd_kcontrol_new wm8971_mono_mixer_controls[] = {
209 SOC_DAPM_SINGLE("Left Playback Switch", WM8971_MOUTM1, 8, 1, 0),
210 SOC_DAPM_SINGLE("Left Bypass Switch", WM8971_MOUTM1, 7, 1, 0),
211 SOC_DAPM_SINGLE("Right Playback Switch", WM8971_MOUTM2, 8, 1, 0),
212 SOC_DAPM_SINGLE("Right Bypass Switch", WM8971_MOUTM2, 7, 1, 0),
213 };
214
215 /* Left Line Mux */
216 static const struct snd_kcontrol_new wm8971_left_line_controls =
217 SOC_DAPM_ENUM("Route", wm8971_enum[8]);
218
219 /* Right Line Mux */
220 static const struct snd_kcontrol_new wm8971_right_line_controls =
221 SOC_DAPM_ENUM("Route", wm8971_enum[9]);
222
223 /* Left PGA Mux */
224 static const struct snd_kcontrol_new wm8971_left_pga_controls =
225 SOC_DAPM_ENUM("Route", wm8971_enum[10]);
226
227 /* Right PGA Mux */
228 static const struct snd_kcontrol_new wm8971_right_pga_controls =
229 SOC_DAPM_ENUM("Route", wm8971_enum[11]);
230
231 /* Mono ADC Mux */
232 static const struct snd_kcontrol_new wm8971_monomux_controls =
233 SOC_DAPM_ENUM("Route", wm8971_enum[13]);
234
235 static const struct snd_soc_dapm_widget wm8971_dapm_widgets[] = {
236 SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
237 &wm8971_left_mixer_controls[0],
238 ARRAY_SIZE(wm8971_left_mixer_controls)),
239 SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
240 &wm8971_right_mixer_controls[0],
241 ARRAY_SIZE(wm8971_right_mixer_controls)),
242 SND_SOC_DAPM_MIXER("Mono Mixer", WM8971_PWR2, 2, 0,
243 &wm8971_mono_mixer_controls[0],
244 ARRAY_SIZE(wm8971_mono_mixer_controls)),
245
246 SND_SOC_DAPM_PGA("Right Out 2", WM8971_PWR2, 3, 0, NULL, 0),
247 SND_SOC_DAPM_PGA("Left Out 2", WM8971_PWR2, 4, 0, NULL, 0),
248 SND_SOC_DAPM_PGA("Right Out 1", WM8971_PWR2, 5, 0, NULL, 0),
249 SND_SOC_DAPM_PGA("Left Out 1", WM8971_PWR2, 6, 0, NULL, 0),
250 SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8971_PWR2, 7, 0),
251 SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8971_PWR2, 8, 0),
252 SND_SOC_DAPM_PGA("Mono Out 1", WM8971_PWR2, 2, 0, NULL, 0),
253
254 SND_SOC_DAPM_SUPPLY("Mic Bias", WM8971_PWR1, 1, 0, NULL, 0),
255 SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8971_PWR1, 2, 0),
256 SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8971_PWR1, 3, 0),
257
258 SND_SOC_DAPM_MUX("Left PGA Mux", WM8971_PWR1, 5, 0,
259 &wm8971_left_pga_controls),
260 SND_SOC_DAPM_MUX("Right PGA Mux", WM8971_PWR1, 4, 0,
261 &wm8971_right_pga_controls),
262 SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
263 &wm8971_left_line_controls),
264 SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
265 &wm8971_right_line_controls),
266
267 SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
268 &wm8971_monomux_controls),
269 SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
270 &wm8971_monomux_controls),
271
272 SND_SOC_DAPM_OUTPUT("LOUT1"),
273 SND_SOC_DAPM_OUTPUT("ROUT1"),
274 SND_SOC_DAPM_OUTPUT("LOUT2"),
275 SND_SOC_DAPM_OUTPUT("ROUT2"),
276 SND_SOC_DAPM_OUTPUT("MONO"),
277
278 SND_SOC_DAPM_INPUT("LINPUT1"),
279 SND_SOC_DAPM_INPUT("RINPUT1"),
280 SND_SOC_DAPM_INPUT("MIC"),
281 };
282
283 static const struct snd_soc_dapm_route wm8971_dapm_routes[] = {
284 /* left mixer */
285 {"Left Mixer", "Playback Switch", "Left DAC"},
286 {"Left Mixer", "Left Bypass Switch", "Left Line Mux"},
287 {"Left Mixer", "Right Playback Switch", "Right DAC"},
288 {"Left Mixer", "Right Bypass Switch", "Right Line Mux"},
289
290 /* right mixer */
291 {"Right Mixer", "Left Playback Switch", "Left DAC"},
292 {"Right Mixer", "Left Bypass Switch", "Left Line Mux"},
293 {"Right Mixer", "Playback Switch", "Right DAC"},
294 {"Right Mixer", "Right Bypass Switch", "Right Line Mux"},
295
296 /* left out 1 */
297 {"Left Out 1", NULL, "Left Mixer"},
298 {"LOUT1", NULL, "Left Out 1"},
299
300 /* left out 2 */
301 {"Left Out 2", NULL, "Left Mixer"},
302 {"LOUT2", NULL, "Left Out 2"},
303
304 /* right out 1 */
305 {"Right Out 1", NULL, "Right Mixer"},
306 {"ROUT1", NULL, "Right Out 1"},
307
308 /* right out 2 */
309 {"Right Out 2", NULL, "Right Mixer"},
310 {"ROUT2", NULL, "Right Out 2"},
311
312 /* mono mixer */
313 {"Mono Mixer", "Left Playback Switch", "Left DAC"},
314 {"Mono Mixer", "Left Bypass Switch", "Left Line Mux"},
315 {"Mono Mixer", "Right Playback Switch", "Right DAC"},
316 {"Mono Mixer", "Right Bypass Switch", "Right Line Mux"},
317
318 /* mono out */
319 {"Mono Out", NULL, "Mono Mixer"},
320 {"MONO1", NULL, "Mono Out"},
321
322 /* Left Line Mux */
323 {"Left Line Mux", "Line", "LINPUT1"},
324 {"Left Line Mux", "PGA", "Left PGA Mux"},
325 {"Left Line Mux", "Differential", "Differential Mux"},
326
327 /* Right Line Mux */
328 {"Right Line Mux", "Line", "RINPUT1"},
329 {"Right Line Mux", "Mic", "MIC"},
330 {"Right Line Mux", "PGA", "Right PGA Mux"},
331 {"Right Line Mux", "Differential", "Differential Mux"},
332
333 /* Left PGA Mux */
334 {"Left PGA Mux", "Line", "LINPUT1"},
335 {"Left PGA Mux", "Differential", "Differential Mux"},
336
337 /* Right PGA Mux */
338 {"Right PGA Mux", "Line", "RINPUT1"},
339 {"Right PGA Mux", "Differential", "Differential Mux"},
340
341 /* Differential Mux */
342 {"Differential Mux", "Line", "LINPUT1"},
343 {"Differential Mux", "Line", "RINPUT1"},
344
345 /* Left ADC Mux */
346 {"Left ADC Mux", "Stereo", "Left PGA Mux"},
347 {"Left ADC Mux", "Mono (Left)", "Left PGA Mux"},
348 {"Left ADC Mux", "Digital Mono", "Left PGA Mux"},
349
350 /* Right ADC Mux */
351 {"Right ADC Mux", "Stereo", "Right PGA Mux"},
352 {"Right ADC Mux", "Mono (Right)", "Right PGA Mux"},
353 {"Right ADC Mux", "Digital Mono", "Right PGA Mux"},
354
355 /* ADC */
356 {"Left ADC", NULL, "Left ADC Mux"},
357 {"Right ADC", NULL, "Right ADC Mux"},
358 };
359
360 struct _coeff_div {
361 u32 mclk;
362 u32 rate;
363 u16 fs;
364 u8 sr:5;
365 u8 usb:1;
366 };
367
368 /* codec hifi mclk clock divider coefficients */
369 static const struct _coeff_div coeff_div[] = {
370 /* 8k */
371 {12288000, 8000, 1536, 0x6, 0x0},
372 {11289600, 8000, 1408, 0x16, 0x0},
373 {18432000, 8000, 2304, 0x7, 0x0},
374 {16934400, 8000, 2112, 0x17, 0x0},
375 {12000000, 8000, 1500, 0x6, 0x1},
376
377 /* 11.025k */
378 {11289600, 11025, 1024, 0x18, 0x0},
379 {16934400, 11025, 1536, 0x19, 0x0},
380 {12000000, 11025, 1088, 0x19, 0x1},
381
382 /* 16k */
383 {12288000, 16000, 768, 0xa, 0x0},
384 {18432000, 16000, 1152, 0xb, 0x0},
385 {12000000, 16000, 750, 0xa, 0x1},
386
387 /* 22.05k */
388 {11289600, 22050, 512, 0x1a, 0x0},
389 {16934400, 22050, 768, 0x1b, 0x0},
390 {12000000, 22050, 544, 0x1b, 0x1},
391
392 /* 32k */
393 {12288000, 32000, 384, 0xc, 0x0},
394 {18432000, 32000, 576, 0xd, 0x0},
395 {12000000, 32000, 375, 0xa, 0x1},
396
397 /* 44.1k */
398 {11289600, 44100, 256, 0x10, 0x0},
399 {16934400, 44100, 384, 0x11, 0x0},
400 {12000000, 44100, 272, 0x11, 0x1},
401
402 /* 48k */
403 {12288000, 48000, 256, 0x0, 0x0},
404 {18432000, 48000, 384, 0x1, 0x0},
405 {12000000, 48000, 250, 0x0, 0x1},
406
407 /* 88.2k */
408 {11289600, 88200, 128, 0x1e, 0x0},
409 {16934400, 88200, 192, 0x1f, 0x0},
410 {12000000, 88200, 136, 0x1f, 0x1},
411
412 /* 96k */
413 {12288000, 96000, 128, 0xe, 0x0},
414 {18432000, 96000, 192, 0xf, 0x0},
415 {12000000, 96000, 125, 0xe, 0x1},
416 };
417
get_coeff(int mclk,int rate)418 static int get_coeff(int mclk, int rate)
419 {
420 int i;
421
422 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
423 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
424 return i;
425 }
426 return -EINVAL;
427 }
428
wm8971_set_dai_sysclk(struct snd_soc_dai * codec_dai,int clk_id,unsigned int freq,int dir)429 static int wm8971_set_dai_sysclk(struct snd_soc_dai *codec_dai,
430 int clk_id, unsigned int freq, int dir)
431 {
432 struct snd_soc_component *component = codec_dai->component;
433 struct wm8971_priv *wm8971 = snd_soc_component_get_drvdata(component);
434
435 switch (freq) {
436 case 11289600:
437 case 12000000:
438 case 12288000:
439 case 16934400:
440 case 18432000:
441 wm8971->sysclk = freq;
442 return 0;
443 }
444 return -EINVAL;
445 }
446
wm8971_set_dai_fmt(struct snd_soc_dai * codec_dai,unsigned int fmt)447 static int wm8971_set_dai_fmt(struct snd_soc_dai *codec_dai,
448 unsigned int fmt)
449 {
450 struct snd_soc_component *component = codec_dai->component;
451 u16 iface = 0;
452
453 /* set master/slave audio interface */
454 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
455 case SND_SOC_DAIFMT_CBM_CFM:
456 iface = 0x0040;
457 break;
458 case SND_SOC_DAIFMT_CBS_CFS:
459 break;
460 default:
461 return -EINVAL;
462 }
463
464 /* interface format */
465 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
466 case SND_SOC_DAIFMT_I2S:
467 iface |= 0x0002;
468 break;
469 case SND_SOC_DAIFMT_RIGHT_J:
470 break;
471 case SND_SOC_DAIFMT_LEFT_J:
472 iface |= 0x0001;
473 break;
474 case SND_SOC_DAIFMT_DSP_A:
475 iface |= 0x0003;
476 break;
477 case SND_SOC_DAIFMT_DSP_B:
478 iface |= 0x0013;
479 break;
480 default:
481 return -EINVAL;
482 }
483
484 /* clock inversion */
485 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
486 case SND_SOC_DAIFMT_NB_NF:
487 break;
488 case SND_SOC_DAIFMT_IB_IF:
489 iface |= 0x0090;
490 break;
491 case SND_SOC_DAIFMT_IB_NF:
492 iface |= 0x0080;
493 break;
494 case SND_SOC_DAIFMT_NB_IF:
495 iface |= 0x0010;
496 break;
497 default:
498 return -EINVAL;
499 }
500
501 snd_soc_component_write(component, WM8971_IFACE, iface);
502 return 0;
503 }
504
wm8971_pcm_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)505 static int wm8971_pcm_hw_params(struct snd_pcm_substream *substream,
506 struct snd_pcm_hw_params *params,
507 struct snd_soc_dai *dai)
508 {
509 struct snd_soc_component *component = dai->component;
510 struct wm8971_priv *wm8971 = snd_soc_component_get_drvdata(component);
511 u16 iface = snd_soc_component_read(component, WM8971_IFACE) & 0x1f3;
512 u16 srate = snd_soc_component_read(component, WM8971_SRATE) & 0x1c0;
513 int coeff = get_coeff(wm8971->sysclk, params_rate(params));
514
515 /* bit size */
516 switch (params_width(params)) {
517 case 16:
518 break;
519 case 20:
520 iface |= 0x0004;
521 break;
522 case 24:
523 iface |= 0x0008;
524 break;
525 case 32:
526 iface |= 0x000c;
527 break;
528 }
529
530 /* set iface & srate */
531 snd_soc_component_write(component, WM8971_IFACE, iface);
532 if (coeff >= 0)
533 snd_soc_component_write(component, WM8971_SRATE, srate |
534 (coeff_div[coeff].sr << 1) | coeff_div[coeff].usb);
535
536 return 0;
537 }
538
wm8971_mute(struct snd_soc_dai * dai,int mute,int direction)539 static int wm8971_mute(struct snd_soc_dai *dai, int mute, int direction)
540 {
541 struct snd_soc_component *component = dai->component;
542 u16 mute_reg = snd_soc_component_read(component, WM8971_ADCDAC) & 0xfff7;
543
544 if (mute)
545 snd_soc_component_write(component, WM8971_ADCDAC, mute_reg | 0x8);
546 else
547 snd_soc_component_write(component, WM8971_ADCDAC, mute_reg);
548 return 0;
549 }
550
wm8971_charge_work(struct work_struct * work)551 static void wm8971_charge_work(struct work_struct *work)
552 {
553 struct wm8971_priv *wm8971 =
554 container_of(work, struct wm8971_priv, charge_work.work);
555
556 /* Set to 500k */
557 regmap_update_bits(wm8971->regmap, WM8971_PWR1, 0x0180, 0x0100);
558 }
559
wm8971_set_bias_level(struct snd_soc_component * component,enum snd_soc_bias_level level)560 static int wm8971_set_bias_level(struct snd_soc_component *component,
561 enum snd_soc_bias_level level)
562 {
563 struct wm8971_priv *wm8971 = snd_soc_component_get_drvdata(component);
564 u16 pwr_reg = snd_soc_component_read(component, WM8971_PWR1) & 0xfe3e;
565
566 switch (level) {
567 case SND_SOC_BIAS_ON:
568 /* set vmid to 50k and unmute dac */
569 snd_soc_component_write(component, WM8971_PWR1, pwr_reg | 0x00c1);
570 break;
571 case SND_SOC_BIAS_PREPARE:
572 /* Wait until fully charged */
573 flush_delayed_work(&wm8971->charge_work);
574 break;
575 case SND_SOC_BIAS_STANDBY:
576 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
577 snd_soc_component_cache_sync(component);
578 /* charge output caps - set vmid to 5k for quick power up */
579 snd_soc_component_write(component, WM8971_PWR1, pwr_reg | 0x01c0);
580 queue_delayed_work(system_power_efficient_wq,
581 &wm8971->charge_work, msecs_to_jiffies(1000));
582 } else {
583 /* mute dac and set vmid to 500k, enable VREF */
584 snd_soc_component_write(component, WM8971_PWR1, pwr_reg | 0x0140);
585 }
586
587 break;
588 case SND_SOC_BIAS_OFF:
589 cancel_delayed_work_sync(&wm8971->charge_work);
590 snd_soc_component_write(component, WM8971_PWR1, 0x0001);
591 break;
592 }
593 return 0;
594 }
595
596 #define WM8971_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
597 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_44100 | \
598 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
599
600 #define WM8971_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
601 SNDRV_PCM_FMTBIT_S24_LE)
602
603 static const struct snd_soc_dai_ops wm8971_dai_ops = {
604 .hw_params = wm8971_pcm_hw_params,
605 .mute_stream = wm8971_mute,
606 .set_fmt = wm8971_set_dai_fmt,
607 .set_sysclk = wm8971_set_dai_sysclk,
608 .no_capture_mute = 1,
609 };
610
611 static struct snd_soc_dai_driver wm8971_dai = {
612 .name = "wm8971-hifi",
613 .playback = {
614 .stream_name = "Playback",
615 .channels_min = 1,
616 .channels_max = 2,
617 .rates = WM8971_RATES,
618 .formats = WM8971_FORMATS,},
619 .capture = {
620 .stream_name = "Capture",
621 .channels_min = 1,
622 .channels_max = 2,
623 .rates = WM8971_RATES,
624 .formats = WM8971_FORMATS,},
625 .ops = &wm8971_dai_ops,
626 };
627
wm8971_probe(struct snd_soc_component * component)628 static int wm8971_probe(struct snd_soc_component *component)
629 {
630 struct wm8971_priv *wm8971 = snd_soc_component_get_drvdata(component);
631
632 INIT_DELAYED_WORK(&wm8971->charge_work, wm8971_charge_work);
633
634 wm8971_reset(component);
635
636 /* set the update bits */
637 snd_soc_component_update_bits(component, WM8971_LDAC, 0x0100, 0x0100);
638 snd_soc_component_update_bits(component, WM8971_RDAC, 0x0100, 0x0100);
639 snd_soc_component_update_bits(component, WM8971_LOUT1V, 0x0100, 0x0100);
640 snd_soc_component_update_bits(component, WM8971_ROUT1V, 0x0100, 0x0100);
641 snd_soc_component_update_bits(component, WM8971_LOUT2V, 0x0100, 0x0100);
642 snd_soc_component_update_bits(component, WM8971_ROUT2V, 0x0100, 0x0100);
643 snd_soc_component_update_bits(component, WM8971_LINVOL, 0x0100, 0x0100);
644 snd_soc_component_update_bits(component, WM8971_RINVOL, 0x0100, 0x0100);
645
646 return 0;
647 }
648
649 static const struct snd_soc_component_driver soc_component_dev_wm8971 = {
650 .probe = wm8971_probe,
651 .set_bias_level = wm8971_set_bias_level,
652 .controls = wm8971_snd_controls,
653 .num_controls = ARRAY_SIZE(wm8971_snd_controls),
654 .dapm_widgets = wm8971_dapm_widgets,
655 .num_dapm_widgets = ARRAY_SIZE(wm8971_dapm_widgets),
656 .dapm_routes = wm8971_dapm_routes,
657 .num_dapm_routes = ARRAY_SIZE(wm8971_dapm_routes),
658 .suspend_bias_off = 1,
659 .idle_bias_on = 1,
660 .use_pmdown_time = 1,
661 .endianness = 1,
662 };
663
664 static const struct regmap_config wm8971_regmap = {
665 .reg_bits = 7,
666 .val_bits = 9,
667 .max_register = WM8971_MOUTV,
668
669 .reg_defaults = wm8971_reg_defaults,
670 .num_reg_defaults = ARRAY_SIZE(wm8971_reg_defaults),
671 .cache_type = REGCACHE_MAPLE,
672 };
673
wm8971_i2c_probe(struct i2c_client * i2c)674 static int wm8971_i2c_probe(struct i2c_client *i2c)
675 {
676 struct wm8971_priv *wm8971;
677
678 wm8971 = devm_kzalloc(&i2c->dev, sizeof(struct wm8971_priv),
679 GFP_KERNEL);
680 if (wm8971 == NULL)
681 return -ENOMEM;
682
683 wm8971->regmap = devm_regmap_init_i2c(i2c, &wm8971_regmap);
684 if (IS_ERR(wm8971->regmap))
685 return PTR_ERR(wm8971->regmap);
686
687 i2c_set_clientdata(i2c, wm8971);
688
689 return devm_snd_soc_register_component(&i2c->dev,
690 &soc_component_dev_wm8971, &wm8971_dai, 1);
691 }
692
693 static const struct i2c_device_id wm8971_i2c_id[] = {
694 { "wm8971" },
695 { }
696 };
697 MODULE_DEVICE_TABLE(i2c, wm8971_i2c_id);
698
699 static struct i2c_driver wm8971_i2c_driver = {
700 .driver = {
701 .name = "wm8971",
702 },
703 .probe = wm8971_i2c_probe,
704 .id_table = wm8971_i2c_id,
705 };
706
707 module_i2c_driver(wm8971_i2c_driver);
708
709 MODULE_DESCRIPTION("ASoC WM8971 driver");
710 MODULE_AUTHOR("Lab126");
711 MODULE_LICENSE("GPL");
712